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>array_diff_assoc</H1
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><P
>    (PHP 4 &#62;= 4.3.0)</P
>array_diff_assoc&nbsp;--&nbsp;Computes the difference of arrays with additional index check</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN4774"
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><H2
>Description</H2
>array <B
CLASS="methodname"
>array_diff_assoc</B
> ( array array1, array array2 [, array ...])<BR
></BR
><P
>&#13;     <B
CLASS="function"
>array_diff_assoc()</B
> returns an <A
HREF="language.types.array.html"
><B
CLASS="type"
>array</B
></A
>
     containing all the values from <TT
CLASS="parameter"
><I
>array1</I
></TT
>
     that are not present in any of the other arguments.
     Note that the keys are used in the comparison unlike 
     <A
HREF="function.array-diff.html"
><B
CLASS="function"
>array_diff()</B
></A
>.
    </P
><P
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><P
><B
>Ejemplo 1. <B
CLASS="function"
>array_diff_assoc()</B
> example</B
></P
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><PRE
CLASS="php"
>&#60;?php
$array1 = array ("a" =&#62; "green", "b" =&#62; "brown", "c" =&#62; "blue", "red");
$array2 = array ("a" =&#62; "green", "yellow", "red");
$result = array_diff_assoc ($array1, $array2);

/* The result is:
Array
(
    [b] =&#62; brown
    [c] =&#62; blue
    [0] =&#62; red
)
*/
?&#62;</PRE
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>
    </P
><P
>&#13;     In our example above you see the <TT
CLASS="literal"
>"a" =&#62; "green"</TT
>
     pair is present in both arrays and thus it is not in the ouput from the
     function. Unlike this, the pair <TT
CLASS="literal"
>0 =&#62; "red"</TT
> 
     is in the ouput because in the second argument <TT
CLASS="literal"
>"red"</TT
>
     has key which is <TT
CLASS="literal"
>1</TT
>. 
    </P
><P
>&#13;     Two values from <SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>key =&#62; value</I
></SPAN
> pairs are
     considered equal only if <TT
CLASS="literal"
>(string) $elem1 === (string)
     $elem2 </TT
>. In other words a strict check takes place so 
     the string representations must be the same.
     
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
      Please note that this function only checks one dimension of a n-dimensional
      array. Of course you can check deeper dimensions by using, for example, 
      <TT
CLASS="literal"
>array_diff_assoc($array1[0], $array2[0]);</TT
>.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     See also <A
HREF="function.array-diff.html"
><B
CLASS="function"
>array_diff()</B
></A
>,
     <A
HREF="function.array-intersect.html"
><B
CLASS="function"
>array_intersect()</B
></A
>,
     and <A
HREF="function.array-intersect-assoc.html"
><B
CLASS="function"
>array_intersect_assoc()</B
></A
>.
    </P
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